Improvement in pumps



c. 11.. D-UWELI'US' &-H. GRIVEL. Pump.--

No. 204,958. Patented June 18, I878.

UNITED STATES PATENT OFFIon I CHARLES H. DUWELIUS AND HENRY ORIVEL, OFRICHMOND, INDIANA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No- 204,958, dated J nne18, 1878; application filed October 1, 1877.

To all whom it may concern:

Be it known that we, CHARLES H. DUWE- LIUS and HENRY ORIvEL, ofRichmond, Wayne county, Indiana, have invented certain new and usefulImprovements in Pumps; and we hereby declare the following to be a full,clear, and exact description of the same, reference being had to thedrawings which accompany this specification and form a part of the same,and to the letters of reference marked thereon.

Figure 1 is a perspective view of the pump in form. Fig. 2 is a verticalsectional view across the center of the cylinder.- Fig. 8 is a sectionalview, showing the pipes entering into water-chamber, and the manner ofsecuring said water-chamber to the projection on the main cylinder.

To enable those skilled in the art to make and use our said invention,we will proceed to describe the same.

In Fig. 1, A is a cylinder, of any required size, properly bored out toadmit of the working of a piston-head, B, Fig. 2, which is attached toand operated by a piston-rod, 0, connected with an ordinarypump-handle,-D, or other suitable device. The cylinder A is providedwith close-fittin g heads a a, through the upper one of which, a, thepiston-rod works in a stuffing-box of ordinary construction.

The upper end of the cylinder A is made extending out from theperpendicular surface in the form of a lug, E, which serves to supportthe water-chamber F and the air-chamber Gr, also the delivery-pipe H andsupply-pipes I and J, the pipe I conducting the water from the bottom ofthe cylinder A to the water chamber F, and the pipe J conducting thewater from the upper part of the cylinder to the water-chamber. Theorifices of these pipes, where they enter the water-chamber, areprovided with valves formed on the ends of a single piece of metal, soshaped that when it is vibrated on its center bearing the openings ofthe pipes I'and J are alternately opened and closed by the pressure ofthe water.

The upper cylinder-head a is provided with two or more valves, composedof circular pieces having flat surfaces, fitting the inner surface ofthe cylinder-head, and provided with stems working in guides, as shownat G d, Fig. l. The valve-stems are provided with spiral springs, theaction of which serves to restore the valves to their proper positions.The lower cylinder-head a has a valve, 0, of similar construction, forthe admission of water into the cylinder from the bottom.

The delivery-pipe H may be curved at the upper end so as to form aspout, and is provided with a curved lug, as a bearing for thepump-handle D. l 2 3 are legs, which are secured to a circular bottompiece, K, serving as a base or foundation for the support of thecylinder A.

The operation of our pump is as follows: The cylinder A is submerged inwater and filled, the piston is forced downward, the valve 6 is closed,and the water forced up through the supply-pipe I into the water-chamberF,

opening the vibrating valve L at the orifice of the pipe I, and closingthe corresponding valve M at the orifice of the short supply-pipe J, andthus forcing the water up through the deliverypipe H. During thisoperation the upper portion of the cylinder has been filled through thevalves 0 d, and as the piston is raised the piston-head exerts an upwardpressure, closing the valves 0 d, and forcing the water through thesupply-pipe J, opening into the water-chamber F. The vibrating valve Mis opened at the orifice of the pipe J, while the corresponding valve Lis closed, and thus the water in the upper portion of the cylinder isdelivered into the water-chamber F and to the delivery-pipe H. Duringthis operation the lower portion of the cylinder has again been filledthrough the valve e, and the successive strokes of the piston produce acontinuous stream through the discharge-pipe H, with a velocityproportioned to the speed and power given to the piston.

When the pump is at rest, the springs on the valve-stems release thevalves from their seats in a measure sufficient to allow the water, byits gravity, to return from the discharge or delivery pipes to thecylinder A, thus leav-,

ing the pipes all empty, and obviating any danger from freezing.

In this arrangement it will be seen that no wood is required, and nowater stands in the pipes.

The valves L and M are a part of each end of an angular or knee-shapedlever, which has a rocking motion, its fulcrum being its center. Thisangular or knee-shaped lever N is the operating agent in opening andclosing the valves L and M.

It will be observed that we form our air and water chambers, which restor find support in the lug E, extended from the flange of the cylinderA, of a single piece or cast of metal, which gives to this feature ofour pump a neat and cheap construction, which precludes the necessityfor packing, excepting in the one joint at the base.

Being aware that pumps have been constructed with pipes connecting themain cylinder with the water-chamber on either side

